Thom H.
Yelp
My kids and I stopped over at Greenburgh on our trip up to Woodstock, got out to stretch our legs (this is late March 2021). The fee is to enter the house property, the grounds are free (at least they are now, as the building is closed b/c of covid). HOWEVER: there's a QR code to their donation page - my kids and I had a nice enough time that I couldn't leave w/o pitching in.
Being Westchester, there are plenty of rocky areas to scramble over. If you're not local (like us, from Long Island), that's a big draw. I mean, all the kids were climbing the rocks, who doesn't like climbing on rocks?
The playground is lovely, and all wood. There were two picnic table areas, with tents (!)
Don't miss the animals, they're to the right as you walk in (check the map that's there). They had a pretty cool raven - I know that ravens are larger than crows but wow that thing was cool. Two bald eagles, too. The chickens looked well cared for, not hen-pecked at all, and there were also some sheep and goats to look at.
We had a nice time but I didn't see a single employee anywhere, it was weird. It seemed like the bathrooms were closed, but there wasn't anyone around to ask. I didn't see any porta-potties, or any signs at all about bathrooms. For a place that otherwise looks well run, the no employee / no bathroom situation was weird.